/Engine/Source/Runtime/Engine/Classes/Components/SkeletalMeshComponent.h
Checks whether or not gravity is enabled on the given bone. NAME_None indicates the root body should be queried. If the bone name given is otherwise invalid, false is returned.
True if gravity is enabled on the bone.
bool IsBodyGravityEnabled ( [FName](API\Runtime\Core\UObject\FName) BoneName )